2 # Handles xml-rpc requests from arbitrary clients. Each is a call to a
3 # function in a Webmin module.
4 # XXX special function for file transfer?
5 # XXX command-line mode
7 if (!$ENV{'GATEWAY_INTERFACE'}) {
10 $ENV{'WEBMIN_CONFIG'} ||= "/etc/webmin";
11 $ENV{'WEBMIN_VAR'} ||= "/var/webmin";
12 if ($0 =~ /^(.*\/)[^\/]+$/) {
16 $0 = "$pwd/xmlrpc.pl";
18 $< == 0 || die "xmlrpc.pl must be run as root";
20 BEGIN { push(@INC, ".."); };
24 $force_lang = $default_lang;
25 $trust_unknown_referers = 1;
27 $main::error_must_die = 1;
29 # Can this user make remote calls?
31 %access = &get_module_acl();
32 if ($access{'rpc'} == 0 || $access{'rpc'} == 2 &&
33 $base_remote_user ne 'admin' && $base_remote_user ne 'root' &&
34 $base_remote_user ne 'sysadm') {
35 &error_exit(1, "Invalid user for RPC");
39 # Load the XML parser module
40 eval "use XML::Parser";
42 &error_exit(2, "XML::Parser Perl module is not installed");
55 my $clen = $ENV{'CONTENT_LENGTH'};
56 while(length($rawxml) < $clen) {
58 my $got = read(STDIN, $buf, $clen - length($rawxml));
60 &error_exit(3, "Failed to read $clen bytes");
67 my $parser = new XML::Parser('Style' => 'Tree');
69 eval { $xml = $parser->parse($rawxml); };
71 &error_exit(4, "Invalid XML : $@");
74 # Look for the method calls, and invoke each one
75 my $xmlrv = "<?xml version=\"1.0\" encoding=\"$default_charset\"?>\n";
76 foreach my $mc (&find_xmls("methodCall", $xml)) {
77 # Find the method name and module
78 my ($mn) = &find_xmls("methodName", $mc);
80 my ($mod, $func) = $mn->[1]->[2] =~ /::/ ?
81 split(/::/, $mn->[1]->[2]) :
82 $mn->[1]->[2] =~ /\./ ?
83 split(/\./, $mn->[1]->[2]) :
84 (undef, $mn->[1]->[2]);
87 my ($params) = &find_xmls("params", $mc);
88 my @params = &find_xmls("param", $params);
90 foreach my $p (@params) {
91 my ($value) = &find_xmls("value", $p, 1);
92 my $perlv = &parse_xml_value($value);
96 # Require the module, if needed
98 if (!$done_require_module{$mod}) {
99 if (!&foreign_check($mod)) {
101 "Webmin module $mod does not exist");
103 eval { &foreign_require($mod, $lib); };
105 $xmlrv .= &make_error_xml(6,
106 "Failed to load module $mod : $@");
114 if ($func eq "eval") {
115 # Execute some Perl code
116 @rv = eval "$args[0]";
118 $xmlrv .= &make_error_xml(8, "Eval failed : $@");
122 # A real function call
123 eval { @rv = &foreign_call($mod, $func, @args); };
125 $xmlrv .= &make_error_xml(7,
126 "Function call $func failed : $@");
132 $xmlrv .= "<methodResponse>\n";
133 $xmlrv .= "<params>\n";
134 $xmlrv .= "<param><value>\n";
136 $xmlrv .= &encode_xml_value($rv[0]);
139 $xmlrv .= &encode_xml_value(\@rv);
141 $xmlrv .= "</value></param>\n";
142 $xmlrv .= "</params>\n";
143 $xmlrv .= "</methodResponse>\n";
146 # Flush all modified files, as some APIs require a call to this function
149 # Return results to caller
150 if (!$command_line) {
151 print "Content-type: text/xml\n";
152 print "Content-length: ",length($xmlrv),"\n";
157 # parse_xml_value(&value)
158 # Given a <value> object, returns a Perl scalar, hash ref or array ref for
163 my ($scalar) = &find_xmls([ "int", "i4", "boolean", "string", "double" ],
165 my ($date) = &find_xmls([ "dateTime.iso8601" ], $value, 1);
166 my ($base64) = &find_xmls("base64", $value, 1);
167 my ($struct) = &find_xmls("struct", $value, 1);
168 my ($array) = &find_xmls("array", $value, 1);
170 return $scalar->[1]->[2];
173 # Need to decode date
178 return &decode_base64($base64->[1]->[2]);
181 # Parse member names and values
183 foreach my $member (&find_xmls("member", $struct, 1)) {
184 my ($name) = &find_xmls("name", $member, 1);
185 my ($value) = &find_xmls("value", $member, 1);
186 my $perlv = &parse_xml_value($value);
187 $rv{$name->[1]->[2]} = $perlv;
194 my ($data) = &find_xmls("data", $array, 1);
195 foreach my $value (&find_xmls("value", $data, 1)) {
196 my $perlv = &parse_xml_value($value);
202 # Fallback - just a string directly in the value
203 return $value->[1]->[2];
207 # encode_xml_value(string|int|&hash|&array)
208 # Given a Perl object, returns XML lines representing it for return to a caller
212 if (ref($perlv) eq "ARRAY") {
213 # Convert to array XML format
214 my $xmlrv = "<array>\n<data>\n";
215 foreach my $v (@$perlv) {
216 $xmlrv .= "<value>\n";
217 $xmlrv .= &encode_xml_value($v);
218 $xmlrv .= "</value>\n";
220 $xmlrv .= "</data>\n</array>\n";
223 elsif (ref($perlv) eq "HASH") {
224 # Convert to struct XML format
225 my $xmlrv = "<struct>\n";
226 foreach my $k (keys %$perlv) {
227 $xmlrv .= "<member>\n";
228 $xmlrv .= "<name>".&html_escape($k)."</name>\n";
229 $xmlrv .= "<value>\n";
230 $xmlrv .= &encode_xml_value($perlv->{$k});
231 $xmlrv .= "</value>\n";
232 $xmlrv .= "</member>\n";
234 $xmlrv .= "</struct>\n";
237 elsif ($perlv =~ /^\-?\d+$/) {
239 return "<int>$perlv</int>\n";
241 elsif ($perlv =~ /^\-?\d*\.\d+$/) {
243 return "<double>$perlv</double>\n";
245 elsif ($perlv =~ /^[\40-\377]*$/) {
247 return "<string>".&html_escape($perlv)."</string>\n";
250 # Contains non-printable characters, so return as base64
251 return "<base64>".&encode_base64($perlv)."</base64>\n";
255 # find_xmls(name|&names, &config, [depth])
256 # Returns the XMLs object with some name, by recursively searching the XML
259 local ($name, $conf, $depth) = @_;
260 local @m = ref($name) ? @$name : ( $name );
261 if (&indexoflc($conf->[0], @m) >= 0) {
266 # Need to recursively scan all sub-elements, except for the first
267 # which is just the tags of this element
268 if (defined($depth) && !$depth) {
269 # Gone too far .. stop
273 local $list = $conf->[1];
275 for($i=1; $i<@$list; $i+=2) {
276 local @srv = &find_xmls($name,
277 [ $list->[$i], $list->[$i+1] ],
278 defined($depth) ? $depth-1 : undef);
286 # error_exit(code, message)
287 # Output an XML error message
290 my ($code, $msg) = @_;
294 # Construct error XML
295 my $xmlerr = "<?xml version=\"1.0\"?>\n";
296 $xmlerr .= &make_error_xml($code, $msg);
299 if (!$command_line) {
300 print "Content-type: text/xml\n";
301 print "Content-length: ",length($xmlerr),"\n";
305 exit($command_line ? $code : 0);
310 my ($code, $msg) = @_;
311 $xmlerr .= "<methodResponse>\n";
312 $xmlerr .= "<fault>\n";
313 $xmlerr .= "<value>\n";
314 $xmlerr .= &encode_xml_value( { 'faultCode' => $code,
315 'faultString' => $msg });
316 $xmlerr .= "</value>\n";
317 $xmlerr .= "</fault>\n";
318 $xmlerr .= "</methodResponse>\n";